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1. 发明专利

JPH1172223A METHOD AND DEVICE FOR IMPROVING FLUIDITY OF SLAG AT SLAG OUTLET IN MELTING FURNACE 失效
公开(公告)号：JPH1172223A
公开(公告)日：1999-03-16
申请号：JP23400397
申请日：1997-08-29
申请人： NIPPON KOKAN KK
发明人： HOSHINO YASUSHI , SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI
IPC分类号： F23L15/02 , F23G5/24 , F23J1/00 , F23J9/00
摘要： PROBLEM TO BE SOLVED: To improve the fluidity of molten slag in a slag outlet by mixing the air and fuel which are alternately heated by heat storage burners at high temperatures, to blow the mixture into the slag outlet of a melting furnace. SOLUTION: A burner 19 is ignited, and a burner 18 is stopped. Further, the air from a suction blower 32 is fed to a heat reservoir 24 by the switching of a switching valve 28, and then the air is heated by the retained heat of the heat reservoir 24. Thereby, the inside of a combustion chamber 17 is warmed up, and the heated exhaust air by the burner 19 is exhausted outside through an exhaust pipe 27. The inside of the combustion chamber 17 is gradually warmed up, and it is brought to high temperatures in the range of about 800 deg.C up to 1,000 deg.C. This high temperature air is fed to an auxiliary burner 13 through piping 16, and then it is mixed with the fuel from a fuel pipe 14. Since the temperature of combustion gas can rise up to a slag melting point or higher easily, the fluidity of the molten slag in the slag outlet 9 can be improved.

2. 发明专利

JPH1172222A METHOD AND DEVICE FOR PREVENTING ADHESION OF SLAG IN MELTING FURNACE 失效
公开(公告)号：JPH1172222A
公开(公告)日：1999-03-16
申请号：JP23400297
申请日：1997-08-29
申请人： NIPPON KOKAN KK
发明人： HOSHINO YASUSHI , SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI
IPC分类号： F23L15/02 , F23G5/24 , F23J1/00 , F23J9/00
摘要： PROBLEM TO BE SOLVED: To prevent molten slag from being cooled and sticking to the inner wall surface of a furnace, by mixing the air, which is alternately heated by heat storage burners at high temperatures, with fuel and burned ash mixed to blow it into the primary combustion chamber of a melting furnace. SOLUTION: A burner 21 is ignited, and a burner 22 is stopped. By the switching of a switching valve 31, the air from a suction blower 35 is fed to a heat reservoir 28, and the air is heated by the retained heat of the heat reservoir 28, so that the inside of a combustion chamber 20 is warmed up. The heated exhaust air by the burner 21 is exhausted outside through an exhaust pipe 32. The high temperature air of the combustion chamber 20 is fed to a burned residue burner 15 through piping 17, and then it is mixed with the fuel from a fuel pipe 18 and the ash of a burned ash feed pipe 19. Since the temperature of combustion gas can rise up to a slag melting point or higher easily, the cooling of slag in the burned residue burner 15 is not generated. Therefore, molten slag does not stick to the inner wall surface 1b of a furnace to block the furnace.

3. 发明专利

JPH10230123A EXHAUST GAS FLUE STRUCTURE FOR CONTINUOUS MELTING FURNACE 失效
公开(公告)号：JPH10230123A
公开(公告)日：1998-09-02
申请号：JP3596197
申请日：1997-02-20
申请人： NIPPON KOKAN KK
发明人： MATSUI TAKEYOSHI , SUGIYAMA NOBUYUKI , HOSHINO YASUSHI
IPC分类号： F23J3/04 , B01D50/00
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas flue structure which is of a simple construction, and positively prevents dust from clogging in a duct and further, increases the yield of a melt from a waste, in a continuous melting furnace. SOLUTION: A waste is melted in a melting furnace 1 and an exhaust gas generated in the melting furnace 1 is exhausted into a dust separation chamber 31 with an expanded bore in such a state that the exhaust gas contains dust. Further, the separation of the dust is accelerated by slowing down the flow velocity of the exhaust gas. In addition, an inverse U-shape connecting pipe 30 is connected to the ceiling 36 of the dust separation chamber 31, and the dust is caused to collide with the shoulder part 36a of the ceiling 36, and further, part of the dust is caused to stick to the shoulder part 36 for the separation of the dust from the exhaust gas. Through this separation process, the dust is forced to fall into the melting furnace 1 with the help of a dust removing means 35. On the other hand, the exhaust gas further runs into the inner wall of the inverse U-shape connecting pipe 30, so that part of the residual dust is separated through sticking to the inner wall and is removed by a dust removing means 41. Finally the dust is recovered at the lower end 40 of a downcomer duct 32a. After that, the exhaust gas is exhausted into a horizontal duct 32b branched at the lower end part of the downcomer duct 32a to be loaded into a cyclone classifier 42.

4. 发明专利

JPH0692750A LIGHT WEIGHT SOUND ABSORBING BOARD 失效
公开(公告)号：JPH0692750A
公开(公告)日：1994-04-05
申请号：JP18751492
申请日：1992-06-22
申请人： NIPPON KOKAN KK , DAIKEN TRADE & INDUSTRY
发明人： INOKAWA NOBURO , SUGIYAMA NOBUYUKI , AKASHI TETSUO , HOSHINO YASUSHI , MAYAHARA TAKASHI , YAMAMA TADAO , SHUDO KEIJI , KO AKIO
IPC分类号： C03B37/00 , C04B5/06 , C04B30/02 , C04B38/00 , E04B1/86 , G10K11/162 , G10K11/16
摘要： PURPOSE:To improve the coating performance of the sound absorbing board using the slag wool obtained from sludge. CONSTITUTION:The mixed slurry consists of the slag wool obtained from the sludge contained in sewerage, an inorg. filler and the prescribed additive, and the content of the inorg. filler is confined in the range of 10-50wt.% per the slag wool content. The mixed slurry consisting of the slag wool, the inorg. filler and the prescribed additive is fed to a paper making machine, and converted to the plate having prescribed thickness. The plate is dried, and drilling work is subjected to the surface of the plate.

5. 发明专利

JPH0345804A BURNER OF MELTING FURNACE 失效
公开(公告)号：JPH0345804A
公开(公告)日：1991-02-27
申请号：JP17899289
申请日：1989-07-13
申请人： NIPPON KOKAN KK
发明人： SUGIYAMA NOBUYUKI , INOKAWA NOBURO , SUZUKI MINORU
IPC分类号： F23G5/00 , F23C5/06 , F23G5/24 , F23G5/32 , F23J9/00
摘要： PURPOSE:To make it possible to raise the temperature of the tap hole rapidly even when its temperature falls temporarily by installing a sludge burner and an auxiliary burner at the positions which are lower than the center of the height of the furnace wall and at the same time fixing one of the burners or both on a rotating body which rotates on a penetrating axis of the furnace wall. CONSTITUTION:An object to be burned which is led to a sludge burner 4 is jetted out towards the inner circumferential wall of the main body 1 of a melting furnace with the fuel for an auxiliary burner 5 so as to burn the object to be burned as it swirls in the furnace, and it melts like slag and is caught by the furnace wall face, and it flows out of a tap hole 3. The temperature of the tap hole 3 falls temporarily if there is an external disturbance such as a variation in the quantity of supply of objects to be burned, a variation in their components, etc. This fall in temperature is detected by a thermocouple, etc., and an electric motor 54 is driven and its rotational force is transmitted to a rotating body 52 through a gear train 53. The rotating body 52 is thereby rotated anticlockwise in the range of angle of theta on a penetrating axis 0-0 which intersects the furnace wall and the position of the burner 50 of the auxiliary burner 5 moves by a distance L. As a result fuel is jetted out of the auxiliary burner 5 towards the vicinity of the tap hole 3, and by the combustion of the fuel the tap hole 3 is heated and it rapidly recovers its original temperature.

6. 发明专利

JPH11270827A ROTARY MELTING UPRIGHT FURNACE 失效
公开(公告)号：JPH11270827A
公开(公告)日：1999-10-05
申请号：JP7587398
申请日：1998-03-24
申请人： NIPPON KOKAN KK
发明人： ISHIZUKA SATORU , MATSUI TAKEYOSHI , SUGIYAMA NOBUYUKI , HOSHINO YASUSHI , SUZUKI MINORU , NAKAMURA AKIRA
IPC分类号： F27B1/21 , F23G5/00 , F23G5/12 , F23G5/32 , F23G5/44
摘要： PROBLEM TO BE SOLVED: To prevent lowering of temperature due to the solidification of a molten slag by constructing a rotary melting upright furnace such that a fuel pipe, a combustion air pipe and a transport pipe for powdery material to be treated are connected to tubular flame burners which form a tubular flame in a melting furnace body, and the powdery material to be treated is blown into the melting furnace body together with a combustion exhaust gas. SOLUTION: At a lower portion of a melting furnace body 10, a plurality of tubular flame burners 20, 20 are disposed in a tangential direction of the inner periphery of the furnace body 10, wherein to these tubular flame burners 20, 20, a pipe 25 for transporting powder to be treated which transports the material to be treated by airflow, a fuel pipe 26 and an air pipe 27 are connected. By such a construction, the mixture gas of the blow-off fuel and air forms a swirling flow. When the swirling flow is ignited, a tubular flame is formed and this flame is injected into the melting body 10 together with powder to be treated. The combustion gas containing unburned components which is generated by the melting furnace body 10 is mixed with air supplied from a secondary air blow-in nozzle 33 in a secondary chamber 30, and the mixture is burned again to be in a high temperature condition and forms a swirling flow. Accordingly, the dust is melted and flows downwardly along the furnace wall and is discharged together with the molten slag.

7. 发明专利

JPH06127962A PRODUCTION OF LIGHTWEIGHT SOUND ABSORPTION PLATE 失效
公开(公告)号：JPH06127962A
公开(公告)日：1994-05-10
申请号：JP18751392
申请日：1992-06-22
申请人： NIPPON KOKAN KK , DAIKEN TRADE & INDUSTRY
发明人： INOKAWA NOBURO , SUGIYAMA NOBUYUKI , AKASHI TETSUO , HOSHINO YASUSHI , MAYAHARA TAKASHI , YAMAMA TADAO , SHUDO KEIJI , KO AKIO
IPC分类号： C03B37/00 , C04B5/06 , C04B26/28 , C04B32/00 , C04B38/00 , D21H13/36 , D21J1/16 , E04B1/86 , G10K11/16 , G10K11/162 , D21H13/40
摘要： PURPOSE:To produce a sound absorption plate, being light in weight and also excellent in flexural strength using slag wool obtained from sludge. CONSTITUTION:As the raw materials, 20-100wt.% slag wool which is obtained from sludge contained in sewerage and the balance of rockwool are used. Water and a prescribed additive are mixed to the raw materials and agitated to prepare a slurry in 1.0-3.0wt.% concentration. The slurry mixture is supplied to a sheet making machine to produce a plate body having prescribed thickness by the sheet making machine. The plate body is dried and then a drilling work is performed on the surface.

8. 发明专利

JPH02150611A FURNACE FOR MELTING WASTE 失效
公开(公告)号：JPH02150611A
公开(公告)日：1990-06-08
申请号：JP30072088
申请日：1988-11-30
申请人： NIPPON KOKAN KK
发明人： TSUBOI HARUTO , INOKAWA NOBURO , UBUSAWA KATSUMI , INUI ETSURO , HOSHINO YASUSHI , SUGIYAMA NOBUYUKI
IPC分类号： F23G5/24 , F23G5/32
摘要： PURPOSE:To secure sufficient time for waste to stay in a furnace and to obtain a high combustion efficiency by setting the direction of jetting of each nozzle of a waste burner device to be closer to a furnace wall than in the direction of jetting of each nozzle of an assist burner device. CONSTITUTION:An assist burner device 5 of the main body 1 of a melting furnace is positioned below a waste burner device 4, that is, to be closer to a slag pouring gate 2 than to the latter. Both burner devices 4 and 5 have a plurality of nozzles practically at the same level of a furnace body practically in the circumferential direction thereof. The waste burner device 4 have nozzles 40a and 40b in four places in the circumferential direction, and the direction of jetting of the nozzles 40a and 40b is deflected from the center of the furnace so that a swirling stream be formed. In order to form a swirling stream X1 of a large diameter to be positioned closer to the furnace wall than a swirling stream X2 formed by the assist burner device 5, the direction of jetting of the nozzles 40a and 40b of the waste burner device 4 is made closer to the furnace wall than that of nozzles 50a and 50b of the assist burner device 5. Accordingly, the swirling streams more multiplex than usual can be formed in the furnace and thus staying property of wastes in the furnace is improved.

9. 发明专利

JPH11294734A ROTARY MELTING FURNACE 失效
公开(公告)号：JPH11294734A
公开(公告)日：1999-10-29
申请号：JP10458698
申请日：1998-04-15
申请人： NIPPON KOKAN KK
发明人： HOSHINO YASUSHI , SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI
IPC分类号： F23G5/00 , F23G5/16 , F23G5/24 , F23J1/00
摘要： PROBLEM TO BE SOLVED: To avoid making such a low temp. region as depositing a molten slug to the inner wall of a sec. combustion chamber by providing at this chamber a tubular burner for forming a tubular flame in the sec. combustion chamber and heating and feeding a sec. air at blowing. SOLUTION: A sec. combustion chamber 20 for burning an exhaust gas contg. unburned components produced in a melting furnace body 10 has a circular tubular shape, tubular flame burners 23 are mounted at a lower part of the sec. combustion chamber 20, a sec. air piping 24 and fuel oil piping 25 are connected to the burners 23 directed in the tangential direction of the inner wall of the melting furnace body to form a revolving flow with a combustion exhaust gas from the burners 23 in the furnace, and the combustion exhaust gas from the burners 23 goes into the sec. combustion chamber 20, mixes with a sec. air heated by the burners 23 to burn and exhausts from an exhaust gas hole 22.

10. 发明专利

JPH11173534A WASTE MELTING FURNACE AND ITS TAPPING PART 失效
公开(公告)号：JPH11173534A
公开(公告)日：1999-06-29
申请号：JP34631197
申请日：1997-12-16
申请人： NIPPON KOKAN KK
发明人： SUGIYAMA NOBUYUKI , MATSUI TAKEYOSHI
IPC分类号： F23G5/00 , F23J1/08
摘要： PROBLEM TO BE SOLVED: To make it hard to occur that a tapping hole is blocked, abrased or damaged even when operating condition is changed by a method wherein a mechanism, capable of changing the opening degree of a molten slag flowing passage, is provided in the tapping part of a water melting furnace. SOLUTION: A tapping unit, for example, is constituted by providing an opening degree regulating valve 5 for changing the opening degree of a flow passage at the tip end of a trough for guiding molten slag 7, discharged out of a melting passage 1. The opening degree regulating valve 5 is structured so that the valve 5 can be rotated about the rotating shaft 6 of the same provided at one end of the same while the opening degree of a trough 4 in the flow passage of the molten slag 7 can be regulated by the rotation of the opening degree regulating valve 5. When the opening degree regulating valve 5 is rotated about the rotating shaft 6 of the same valve to regulate the opening degree of the trough 4 in such a constitution, blocking of a tapping hole 2 by the solidifying and accumulating of the molten slag 7 in the tapping hole 2 or the abrasion and damage of the tapping port 3 by the flow of exhaust gas can be prevented whereby a melting furnace can be operated stably.

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